<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    // Copyright 2006-2008 Regents of the University of California.  May be used <a name="line.1"></a>
<FONT color="green">002</FONT>    // under the terms of the revised BSD license.  See LICENSING for details.<a name="line.2"></a>
<FONT color="green">003</FONT>    package org.joe_e.reflect;<a name="line.3"></a>
<FONT color="green">004</FONT>    <a name="line.4"></a>
<FONT color="green">005</FONT>    import java.lang.reflect.Constructor;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.lang.reflect.Field;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.lang.reflect.InvocationTargetException;<a name="line.7"></a>
<FONT color="green">008</FONT>    import java.lang.reflect.Member;<a name="line.8"></a>
<FONT color="green">009</FONT>    import java.lang.reflect.Method;<a name="line.9"></a>
<FONT color="green">010</FONT>    import java.lang.reflect.Modifier;<a name="line.10"></a>
<FONT color="green">011</FONT>    import java.util.Arrays;<a name="line.11"></a>
<FONT color="green">012</FONT>    import java.util.Comparator;<a name="line.12"></a>
<FONT color="green">013</FONT>    import java.util.regex.Pattern;<a name="line.13"></a>
<FONT color="green">014</FONT>    <a name="line.14"></a>
<FONT color="green">015</FONT>    import org.joe_e.IsJoeE;<a name="line.15"></a>
<FONT color="green">016</FONT>    import org.joe_e.array.PowerlessArray;<a name="line.16"></a>
<FONT color="green">017</FONT>    import org.joe_e.taming.Policy;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    /**<a name="line.19"></a>
<FONT color="green">020</FONT>     * The reflection interface.<a name="line.20"></a>
<FONT color="green">021</FONT>     * &lt;p&gt;<a name="line.21"></a>
<FONT color="green">022</FONT>     * This API provides reflective access to all the public constructors, public<a name="line.22"></a>
<FONT color="green">023</FONT>     * fields and public methods of public Joe-E classes and interfaces. The API<a name="line.23"></a>
<FONT color="green">024</FONT>     * provides no more permission than is provided by static Joe-E program code.<a name="line.24"></a>
<FONT color="green">025</FONT>     * If you can do something with the reflection API, you could also have done<a name="line.25"></a>
<FONT color="green">026</FONT>     * it using static Joe-E code. The only difference is expressivity.<a name="line.26"></a>
<FONT color="green">027</FONT>     * &lt;/p&gt;<a name="line.27"></a>
<FONT color="green">028</FONT>     */<a name="line.28"></a>
<FONT color="green">029</FONT>    public final class Reflection {<a name="line.29"></a>
<FONT color="green">030</FONT>        private Reflection() {}<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>        static final Pattern UNQUALIFY = <a name="line.32"></a>
<FONT color="green">033</FONT>            Pattern.compile("[^\\(&lt;&gt; ]*\\.([^&lt;&gt; \\.]*)");<a name="line.33"></a>
<FONT color="green">034</FONT>        /*<a name="line.34"></a>
<FONT color="green">035</FONT>         * Methods for obtaining reflective objects<a name="line.35"></a>
<FONT color="green">036</FONT>         */<a name="line.36"></a>
<FONT color="green">037</FONT>            <a name="line.37"></a>
<FONT color="green">038</FONT>        /**<a name="line.38"></a>
<FONT color="green">039</FONT>         * Gets a public field.<a name="line.39"></a>
<FONT color="green">040</FONT>         * &lt;p&gt;<a name="line.40"></a>
<FONT color="green">041</FONT>         * This method wraps {@link Class#getField}.<a name="line.41"></a>
<FONT color="green">042</FONT>         * &lt;/p&gt;<a name="line.42"></a>
<FONT color="green">043</FONT>         * @param type  class to search<a name="line.43"></a>
<FONT color="green">044</FONT>         * @param name  field name<a name="line.44"></a>
<FONT color="green">045</FONT>         * @return described field<a name="line.45"></a>
<FONT color="green">046</FONT>         * @throws NoSuchFieldException no matching field found<a name="line.46"></a>
<FONT color="green">047</FONT>         */<a name="line.47"></a>
<FONT color="green">048</FONT>        static public Field field(final Class&lt;?&gt; type, final String name) <a name="line.48"></a>
<FONT color="green">049</FONT>                                            throws NoSuchFieldException {<a name="line.49"></a>
<FONT color="green">050</FONT>            return type.getField(name);<a name="line.50"></a>
<FONT color="green">051</FONT>        }<a name="line.51"></a>
<FONT color="green">052</FONT>    <a name="line.52"></a>
<FONT color="green">053</FONT>        /**<a name="line.53"></a>
<FONT color="green">054</FONT>         * Gets all public fields.<a name="line.54"></a>
<FONT color="green">055</FONT>         * &lt;p&gt;<a name="line.55"></a>
<FONT color="green">056</FONT>         * This method wraps {@link Class#getFields}.<a name="line.56"></a>
<FONT color="green">057</FONT>         * &lt;/p&gt;<a name="line.57"></a>
<FONT color="green">058</FONT>         * @param type  object type<a name="line.58"></a>
<FONT color="green">059</FONT>         * @return described fields<a name="line.59"></a>
<FONT color="green">060</FONT>         */<a name="line.60"></a>
<FONT color="green">061</FONT>        static public PowerlessArray&lt;Field&gt; fields(final Class&lt;?&gt; type) {<a name="line.61"></a>
<FONT color="green">062</FONT>            final Field[] fs = type.getFields();<a name="line.62"></a>
<FONT color="green">063</FONT>    <a name="line.63"></a>
<FONT color="green">064</FONT>            // Sort the members to preserve determinism.<a name="line.64"></a>
<FONT color="green">065</FONT>            Arrays.sort(fs, new Comparator&lt;Field&gt;() {<a name="line.65"></a>
<FONT color="green">066</FONT>                public int compare(final Field a, final Field b) {<a name="line.66"></a>
<FONT color="green">067</FONT>                    int diff = a.getName().compareTo(b.getName());<a name="line.67"></a>
<FONT color="green">068</FONT>                    if (diff == 0) {<a name="line.68"></a>
<FONT color="green">069</FONT>                        diff = a.getDeclaringClass().getName().compareTo(<a name="line.69"></a>
<FONT color="green">070</FONT>                                   b.getDeclaringClass().getName());<a name="line.70"></a>
<FONT color="green">071</FONT>                        // Class.getName() fine as long as fields belonging to<a name="line.71"></a>
<FONT color="green">072</FONT>                        // proxy classes are never safe().<a name="line.72"></a>
<FONT color="green">073</FONT>                    }<a name="line.73"></a>
<FONT color="green">074</FONT>                    return diff;<a name="line.74"></a>
<FONT color="green">075</FONT>                }<a name="line.75"></a>
<FONT color="green">076</FONT>            });<a name="line.76"></a>
<FONT color="green">077</FONT>    <a name="line.77"></a>
<FONT color="green">078</FONT>            return PowerlessArray.array(fs);<a name="line.78"></a>
<FONT color="green">079</FONT>        }<a name="line.79"></a>
<FONT color="green">080</FONT>    <a name="line.80"></a>
<FONT color="green">081</FONT>        /**<a name="line.81"></a>
<FONT color="green">082</FONT>         * Gets a public constructor.<a name="line.82"></a>
<FONT color="green">083</FONT>         * &lt;p&gt;<a name="line.83"></a>
<FONT color="green">084</FONT>         * This method wraps {@link Class#getConstructor}.<a name="line.84"></a>
<FONT color="green">085</FONT>         * &lt;/p&gt;<a name="line.85"></a>
<FONT color="green">086</FONT>         * @param type  class to search<a name="line.86"></a>
<FONT color="green">087</FONT>         * @param args each parameter type<a name="line.87"></a>
<FONT color="green">088</FONT>         * @return described constructor<a name="line.88"></a>
<FONT color="green">089</FONT>         * @throws NoSuchMethodException    no matching constructor found<a name="line.89"></a>
<FONT color="green">090</FONT>         */<a name="line.90"></a>
<FONT color="green">091</FONT>        static public &lt;T&gt; Constructor&lt;T&gt; constructor(final Class&lt;T&gt; type, final Class&lt;?&gt;... args)<a name="line.91"></a>
<FONT color="green">092</FONT>                                            throws NoSuchMethodException {<a name="line.92"></a>
<FONT color="green">093</FONT>            return type.getConstructor(args);<a name="line.93"></a>
<FONT color="green">094</FONT>        }<a name="line.94"></a>
<FONT color="green">095</FONT>    <a name="line.95"></a>
<FONT color="green">096</FONT>        <a name="line.96"></a>
<FONT color="green">097</FONT>        /**<a name="line.97"></a>
<FONT color="green">098</FONT>         * Gets all declared public constructors.<a name="line.98"></a>
<FONT color="green">099</FONT>         * &lt;p&gt;<a name="line.99"></a>
<FONT color="green">100</FONT>         * This method wraps {@link Class#getConstructors}.<a name="line.100"></a>
<FONT color="green">101</FONT>         * &lt;/p&gt;<a name="line.101"></a>
<FONT color="green">102</FONT>         * @param type class to search<a name="line.102"></a>
<FONT color="green">103</FONT>         * @return all public constructors<a name="line.103"></a>
<FONT color="green">104</FONT>         */<a name="line.104"></a>
<FONT color="green">105</FONT>    //    static public &lt;T&gt; PowerlessArray&lt;Constructor&lt;T&gt;&gt; <a name="line.105"></a>
<FONT color="green">106</FONT>    //                                        constructors(final Class&lt;T&gt; type) {<a name="line.106"></a>
<FONT color="green">107</FONT>    //  Although more expressive, this form is not used as it would preclude doing<a name="line.107"></a>
<FONT color="green">108</FONT>    //  anything with the result without casting it to just PowerlessArray&lt;?&gt; or<a name="line.108"></a>
<FONT color="green">109</FONT>    //  suppressing an unchecked cast warning at the point of use.<a name="line.109"></a>
<FONT color="green">110</FONT>    <a name="line.110"></a>
<FONT color="green">111</FONT>        static public PowerlessArray&lt;Constructor&lt;?&gt;&gt; <a name="line.111"></a>
<FONT color="green">112</FONT>                                            constructors(final Class&lt;?&gt; type) {<a name="line.112"></a>
<FONT color="green">113</FONT>        <a name="line.113"></a>
<FONT color="green">114</FONT>            final Constructor&lt;?&gt;[] cs = type.getConstructors();<a name="line.114"></a>
<FONT color="green">115</FONT>    <a name="line.115"></a>
<FONT color="green">116</FONT>            // Sort the members to preserve determinism.<a name="line.116"></a>
<FONT color="green">117</FONT>            Arrays.sort(cs, new Comparator&lt;Constructor&lt;?&gt;&gt;() {<a name="line.117"></a>
<FONT color="green">118</FONT>                public int compare(final Constructor&lt;?&gt; a, final Constructor&lt;?&gt; b) {<a name="line.118"></a>
<FONT color="green">119</FONT>                    final Class&lt;?&gt;[] pa = a.getParameterTypes();<a name="line.119"></a>
<FONT color="green">120</FONT>                    final Class&lt;?&gt;[] pb = b.getParameterTypes();<a name="line.120"></a>
<FONT color="green">121</FONT>                    int diff = pa.length - pb.length;<a name="line.121"></a>
<FONT color="green">122</FONT>                    for (int i = 0; diff == 0 &amp;&amp; i &lt; pa.length; ++i) {<a name="line.122"></a>
<FONT color="green">123</FONT>                        diff = pa[i].getName().compareTo(pb[i].getName());<a name="line.123"></a>
<FONT color="green">124</FONT>                        // OK since compiled types don't change<a name="line.124"></a>
<FONT color="green">125</FONT>                    }<a name="line.125"></a>
<FONT color="green">126</FONT>                    return diff;<a name="line.126"></a>
<FONT color="green">127</FONT>                }<a name="line.127"></a>
<FONT color="green">128</FONT>            });<a name="line.128"></a>
<FONT color="green">129</FONT>    <a name="line.129"></a>
<FONT color="green">130</FONT>            return PowerlessArray.array(cs);<a name="line.130"></a>
<FONT color="green">131</FONT>        }<a name="line.131"></a>
<FONT color="green">132</FONT>        <a name="line.132"></a>
<FONT color="green">133</FONT>    <a name="line.133"></a>
<FONT color="green">134</FONT>        /**<a name="line.134"></a>
<FONT color="green">135</FONT>         * Gets a public method.<a name="line.135"></a>
<FONT color="green">136</FONT>         * &lt;p&gt;<a name="line.136"></a>
<FONT color="green">137</FONT>         * This method wraps {@link Class#getMethod}.<a name="line.137"></a>
<FONT color="green">138</FONT>         * &lt;/p&gt;<a name="line.138"></a>
<FONT color="green">139</FONT>         * @param type  class to search<a name="line.139"></a>
<FONT color="green">140</FONT>         * @param name  method name<a name="line.140"></a>
<FONT color="green">141</FONT>         * @param args each parameter type<a name="line.141"></a>
<FONT color="green">142</FONT>         * @return described method<a name="line.142"></a>
<FONT color="green">143</FONT>         * @throws NoSuchMethodException    no matching method found<a name="line.143"></a>
<FONT color="green">144</FONT>         */<a name="line.144"></a>
<FONT color="green">145</FONT>        static public Method method(final Class&lt;?&gt; type, final String name, <a name="line.145"></a>
<FONT color="green">146</FONT>                                    final Class&lt;?&gt;... args) <a name="line.146"></a>
<FONT color="green">147</FONT>                                            throws NoSuchMethodException {<a name="line.147"></a>
<FONT color="green">148</FONT>            return type.getMethod(name, args);<a name="line.148"></a>
<FONT color="green">149</FONT>        }<a name="line.149"></a>
<FONT color="green">150</FONT>    <a name="line.150"></a>
<FONT color="green">151</FONT>        /**<a name="line.151"></a>
<FONT color="green">152</FONT>         * Gets all public methods.<a name="line.152"></a>
<FONT color="green">153</FONT>         * &lt;p&gt;<a name="line.153"></a>
<FONT color="green">154</FONT>         * This method wraps {@link Class#getMethods}.<a name="line.154"></a>
<FONT color="green">155</FONT>         * &lt;/p&gt;<a name="line.155"></a>
<FONT color="green">156</FONT>         * @param type object type<a name="line.156"></a>
<FONT color="green">157</FONT>         * @return described methods<a name="line.157"></a>
<FONT color="green">158</FONT>         */<a name="line.158"></a>
<FONT color="green">159</FONT>        static public PowerlessArray&lt;Method&gt; methods(final Class&lt;?&gt; type) {<a name="line.159"></a>
<FONT color="green">160</FONT>            final Method[] ms = type.getMethods();<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>            // Sort the members to preserve determinism.<a name="line.162"></a>
<FONT color="green">163</FONT>            Arrays.sort(ms, new Comparator&lt;Method&gt;() {<a name="line.163"></a>
<FONT color="green">164</FONT>                public int compare(final Method a, final Method b) {<a name="line.164"></a>
<FONT color="green">165</FONT>                    int diff = a.getName().compareTo(b.getName());<a name="line.165"></a>
<FONT color="green">166</FONT>                    if (diff == 0) {<a name="line.166"></a>
<FONT color="green">167</FONT>                        diff = a.getDeclaringClass().getName().compareTo(<a name="line.167"></a>
<FONT color="green">168</FONT>                                b.getDeclaringClass().getName());<a name="line.168"></a>
<FONT color="green">169</FONT>                        // Class.getName() fine as long as methods belonging to<a name="line.169"></a>
<FONT color="green">170</FONT>                        // proxy classes are never safe().<a name="line.170"></a>
<FONT color="green">171</FONT>                        if (diff == 0) {<a name="line.171"></a>
<FONT color="green">172</FONT>                            final Class&lt;?&gt;[] pa = a.getParameterTypes();<a name="line.172"></a>
<FONT color="green">173</FONT>                            final Class&lt;?&gt;[] pb = b.getParameterTypes();<a name="line.173"></a>
<FONT color="green">174</FONT>                            if (pa.length != pb.length) {<a name="line.174"></a>
<FONT color="green">175</FONT>                                diff = pa.length - pb.length;<a name="line.175"></a>
<FONT color="green">176</FONT>                            }<a name="line.176"></a>
<FONT color="green">177</FONT>                            for (int i = 0; diff == 0 &amp;&amp; i &lt; pa.length; ++i) {<a name="line.177"></a>
<FONT color="green">178</FONT>                                diff = pa[i].getName().compareTo(pb[i].getName());<a name="line.178"></a>
<FONT color="green">179</FONT>                            }<a name="line.179"></a>
<FONT color="green">180</FONT>                            // OK since compiled types don't change<a name="line.180"></a>
<FONT color="green">181</FONT>                        }<a name="line.181"></a>
<FONT color="green">182</FONT>                    }<a name="line.182"></a>
<FONT color="green">183</FONT>                    return diff;<a name="line.183"></a>
<FONT color="green">184</FONT>                }<a name="line.184"></a>
<FONT color="green">185</FONT>            });<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>            return PowerlessArray.array(ms);<a name="line.187"></a>
<FONT color="green">188</FONT>        }<a name="line.188"></a>
<FONT color="green">189</FONT>    <a name="line.189"></a>
<FONT color="green">190</FONT>        /**<a name="line.190"></a>
<FONT color="green">191</FONT>         * Get the name of the entity represented by a &lt;code&gt;Class&lt;/code&gt; object,<a name="line.191"></a>
<FONT color="green">192</FONT>         * in the same format as returned by {@link Class#getName()}.  This wrapper<a name="line.192"></a>
<FONT color="green">193</FONT>         * exists to avoid exposing the number of proxy interfaces that have been<a name="line.193"></a>
<FONT color="green">194</FONT>         * generated.<a name="line.194"></a>
<FONT color="green">195</FONT>         * @param c the class to get the name of<a name="line.195"></a>
<FONT color="green">196</FONT>         * @return the name of class &lt;code&gt;c&lt;/code&gt;<a name="line.196"></a>
<FONT color="green">197</FONT>         * @throws IllegalArgumentException if &lt;code&gt;c&lt;/code&gt; is a proxy class<a name="line.197"></a>
<FONT color="green">198</FONT>         */<a name="line.198"></a>
<FONT color="green">199</FONT>        static public String getName(Class&lt;?&gt; c) {<a name="line.199"></a>
<FONT color="green">200</FONT>            if (java.lang.reflect.Proxy.isProxyClass(c)) {<a name="line.200"></a>
<FONT color="green">201</FONT>                throw new IllegalArgumentException("Can't get the name of a " +<a name="line.201"></a>
<FONT color="green">202</FONT>                                                   "proxy class.");<a name="line.202"></a>
<FONT color="green">203</FONT>            } else {<a name="line.203"></a>
<FONT color="green">204</FONT>                return c.getName();<a name="line.204"></a>
<FONT color="green">205</FONT>            }<a name="line.205"></a>
<FONT color="green">206</FONT>        }<a name="line.206"></a>
<FONT color="green">207</FONT>        <a name="line.207"></a>
<FONT color="green">208</FONT>        /**<a name="line.208"></a>
<FONT color="green">209</FONT>         * Clears the stack trace on an exception.<a name="line.209"></a>
<FONT color="green">210</FONT>         * @param e exception to modify<a name="line.210"></a>
<FONT color="green">211</FONT>         */<a name="line.211"></a>
<FONT color="green">212</FONT>        static public void clearStackTrace(final Throwable e) {<a name="line.212"></a>
<FONT color="green">213</FONT>            e.setStackTrace(new StackTraceElement[] {});<a name="line.213"></a>
<FONT color="green">214</FONT>        }<a name="line.214"></a>
<FONT color="green">215</FONT>        <a name="line.215"></a>
<FONT color="green">216</FONT>        /**<a name="line.216"></a>
<FONT color="green">217</FONT>         * boot class loader<a name="line.217"></a>
<FONT color="green">218</FONT>         */<a name="line.218"></a>
<FONT color="green">219</FONT>        // static private final ClassLoader boot = Runnable.class.getClassLoader();<a name="line.219"></a>
<FONT color="green">220</FONT>       <a name="line.220"></a>
<FONT color="green">221</FONT>        /**<a name="line.221"></a>
<FONT color="green">222</FONT>         * Is the given member allowed to be accessed by Joe-E code?<a name="line.222"></a>
<FONT color="green">223</FONT>         * @param member    candidate member<a name="line.223"></a>
<FONT color="green">224</FONT>         * @return &lt;code&gt;true&lt;/code&gt; if the member may be used by Joe-E code,<a name="line.224"></a>
<FONT color="green">225</FONT>         *         else &lt;code&gt;false&lt;/code&gt;<a name="line.225"></a>
<FONT color="green">226</FONT>         */<a name="line.226"></a>
<FONT color="green">227</FONT>        static private boolean safe(final Member member) {<a name="line.227"></a>
<FONT color="green">228</FONT>            final Class&lt;?&gt; declarer = member.getDeclaringClass();<a name="line.228"></a>
<FONT color="green">229</FONT>            // safe if declared in a Joe-E package<a name="line.229"></a>
<FONT color="green">230</FONT>            final Package pkg = declarer.getPackage();<a name="line.230"></a>
<FONT color="green">231</FONT>            // getPackage returns null for proxy classes<a name="line.231"></a>
<FONT color="green">232</FONT>            if (pkg != null &amp;&amp; pkg.isAnnotationPresent(IsJoeE.class)) {<a name="line.232"></a>
<FONT color="green">233</FONT>                return true;<a name="line.233"></a>
<FONT color="green">234</FONT>            }<a name="line.234"></a>
<FONT color="green">235</FONT>            <a name="line.235"></a>
<FONT color="green">236</FONT>            // getName() is the binary name, possibly with $'s<a name="line.236"></a>
<FONT color="green">237</FONT>            StringBuilder sb = new StringBuilder(declarer.getName());<a name="line.237"></a>
<FONT color="green">238</FONT>            if (member instanceof Field) {<a name="line.238"></a>
<FONT color="green">239</FONT>                sb.append("." + member.getName());<a name="line.239"></a>
<FONT color="green">240</FONT>                return Policy.fieldEnabled(sb.toString());<a name="line.240"></a>
<FONT color="green">241</FONT>            }<a name="line.241"></a>
<FONT color="green">242</FONT>            else if (member instanceof Constructor&lt;?&gt;) {<a name="line.242"></a>
<FONT color="green">243</FONT>                String stringForm = member.toString();<a name="line.243"></a>
<FONT color="green">244</FONT>                String args = stringForm.substring(stringForm.indexOf('('),<a name="line.244"></a>
<FONT color="green">245</FONT>                                                   stringForm.indexOf(')') + 1);<a name="line.245"></a>
<FONT color="green">246</FONT>                sb.append(UNQUALIFY.matcher(args).replaceAll("$1"));<a name="line.246"></a>
<FONT color="green">247</FONT>                return Policy.constructorEnabled(sb.toString());<a name="line.247"></a>
<FONT color="green">248</FONT>            } else { // member instanceof Method<a name="line.248"></a>
<FONT color="green">249</FONT>                sb.append("." + member.getName());<a name="line.249"></a>
<FONT color="green">250</FONT>                String stringForm = member.toString();<a name="line.250"></a>
<FONT color="green">251</FONT>                String args = stringForm.substring(stringForm.indexOf('('),<a name="line.251"></a>
<FONT color="green">252</FONT>                                                   stringForm.indexOf(')') + 1);<a name="line.252"></a>
<FONT color="green">253</FONT>                sb.append(UNQUALIFY.matcher(args).replaceAll("$1"));<a name="line.253"></a>
<FONT color="green">254</FONT>                return Policy.methodEnabled(sb.toString());<a name="line.254"></a>
<FONT color="green">255</FONT>            }<a name="line.255"></a>
<FONT color="green">256</FONT>        }<a name="line.256"></a>
<FONT color="green">257</FONT>            <a name="line.257"></a>
<FONT color="green">258</FONT>        /*<a name="line.258"></a>
<FONT color="green">259</FONT>         * Methods for using reflective objects<a name="line.259"></a>
<FONT color="green">260</FONT>         */<a name="line.260"></a>
<FONT color="green">261</FONT>        <a name="line.261"></a>
<FONT color="green">262</FONT>        /**<a name="line.262"></a>
<FONT color="green">263</FONT>         * Gets the value of a field.<a name="line.263"></a>
<FONT color="green">264</FONT>         * @param field  field to access<a name="line.264"></a>
<FONT color="green">265</FONT>         * @param self  target object<a name="line.265"></a>
<FONT color="green">266</FONT>         * @return field value<a name="line.266"></a>
<FONT color="green">267</FONT>         * @throws IllegalAccessException   &lt;code&gt;field&lt;/code&gt; is inaccessible<a name="line.267"></a>
<FONT color="green">268</FONT>         */<a name="line.268"></a>
<FONT color="green">269</FONT>        static public Object get(final Field field, final Object self) <a name="line.269"></a>
<FONT color="green">270</FONT>                                            throws IllegalAccessException {<a name="line.270"></a>
<FONT color="green">271</FONT>            if (!Modifier.isPublic(field.getDeclaringClass().getModifiers())) {<a name="line.271"></a>
<FONT color="green">272</FONT>                throw new IllegalAccessException(field.toString());<a name="line.272"></a>
<FONT color="green">273</FONT>            }<a name="line.273"></a>
<FONT color="green">274</FONT>            if (!safe(field)) {throw new IllegalAccessException(field.toString());}<a name="line.274"></a>
<FONT color="green">275</FONT>            return field.get(self);<a name="line.275"></a>
<FONT color="green">276</FONT>        }<a name="line.276"></a>
<FONT color="green">277</FONT>    <a name="line.277"></a>
<FONT color="green">278</FONT>        /**<a name="line.278"></a>
<FONT color="green">279</FONT>         * Sets the value of a field.<a name="line.279"></a>
<FONT color="green">280</FONT>         * @param field  field to access<a name="line.280"></a>
<FONT color="green">281</FONT>         * @param self  target object<a name="line.281"></a>
<FONT color="green">282</FONT>         * @param value new value<a name="line.282"></a>
<FONT color="green">283</FONT>         * @throws IllegalAccessException   &lt;code&gt;field&lt;/code&gt; is inaccessible<a name="line.283"></a>
<FONT color="green">284</FONT>         */<a name="line.284"></a>
<FONT color="green">285</FONT>        static public void set(final Field field, final Object self, <a name="line.285"></a>
<FONT color="green">286</FONT>                               final Object value) throws IllegalAccessException {<a name="line.286"></a>
<FONT color="green">287</FONT>            if (!Modifier.isPublic(field.getDeclaringClass().getModifiers())) {<a name="line.287"></a>
<FONT color="green">288</FONT>                throw new IllegalAccessException(field.toString());<a name="line.288"></a>
<FONT color="green">289</FONT>            }<a name="line.289"></a>
<FONT color="green">290</FONT>            if (!safe(field)) {throw new IllegalAccessException(field.toString());}<a name="line.290"></a>
<FONT color="green">291</FONT>            field.set(self, value);<a name="line.291"></a>
<FONT color="green">292</FONT>        }<a name="line.292"></a>
<FONT color="green">293</FONT>    <a name="line.293"></a>
<FONT color="green">294</FONT>        /**<a name="line.294"></a>
<FONT color="green">295</FONT>         * Invokes a reflected constructor.<a name="line.295"></a>
<FONT color="green">296</FONT>         * @param ctor  constructor to invoke<a name="line.296"></a>
<FONT color="green">297</FONT>         * @param args   each argument<a name="line.297"></a>
<FONT color="green">298</FONT>         * @return constructed object<a name="line.298"></a>
<FONT color="green">299</FONT>         * @throws IllegalAccessException  &lt;code&gt;ctor&lt;/code&gt; is inaccessible<a name="line.299"></a>
<FONT color="green">300</FONT>         * @throws ClassCastException  &lt;code&gt;ctor.newInstance()&lt;/code&gt; throws an <a name="line.300"></a>
<FONT color="green">301</FONT>         *    &lt;code&gt;IllegalArgumentException&lt;/code&gt;, usually due to mismatched types   <a name="line.301"></a>
<FONT color="green">302</FONT>         * @throws Exception    an exception thrown by the invoked constructor<a name="line.302"></a>
<FONT color="green">303</FONT>         */<a name="line.303"></a>
<FONT color="green">304</FONT>        static public &lt;T&gt; T construct(final Constructor&lt;T&gt; ctor, final Object... args)<a name="line.304"></a>
<FONT color="green">305</FONT>                                            throws Exception {<a name="line.305"></a>
<FONT color="green">306</FONT>            if (!Modifier.isPublic(ctor.getDeclaringClass().getModifiers())) {<a name="line.306"></a>
<FONT color="green">307</FONT>                throw new IllegalAccessException(ctor.toString());<a name="line.307"></a>
<FONT color="green">308</FONT>            }<a name="line.308"></a>
<FONT color="green">309</FONT>            if (!safe(ctor)) { throw new IllegalAccessException(ctor.toString()); }<a name="line.309"></a>
<FONT color="green">310</FONT>            try {<a name="line.310"></a>
<FONT color="green">311</FONT>                return ctor.newInstance(args);<a name="line.311"></a>
<FONT color="green">312</FONT>            } catch (final IllegalArgumentException e) {<a name="line.312"></a>
<FONT color="green">313</FONT>                throw new ClassCastException(e.getMessage());<a name="line.313"></a>
<FONT color="green">314</FONT>            } catch (final InvocationTargetException e) {<a name="line.314"></a>
<FONT color="green">315</FONT>                final Throwable cause = e.getCause();<a name="line.315"></a>
<FONT color="green">316</FONT>                if (cause instanceof Error) { <a name="line.316"></a>
<FONT color="green">317</FONT>                    throw (Error) cause;<a name="line.317"></a>
<FONT color="green">318</FONT>                }<a name="line.318"></a>
<FONT color="green">319</FONT>                throw (Exception) cause;<a name="line.319"></a>
<FONT color="green">320</FONT>            }<a name="line.320"></a>
<FONT color="green">321</FONT>        }<a name="line.321"></a>
<FONT color="green">322</FONT>    <a name="line.322"></a>
<FONT color="green">323</FONT>        /**<a name="line.323"></a>
<FONT color="green">324</FONT>         * Invokes a reflected method.<a name="line.324"></a>
<FONT color="green">325</FONT>         * @param method  method to invoke<a name="line.325"></a>
<FONT color="green">326</FONT>         * @param self  target object<a name="line.326"></a>
<FONT color="green">327</FONT>         * @param args   each argument<a name="line.327"></a>
<FONT color="green">328</FONT>         * @return invocation return<a name="line.328"></a>
<FONT color="green">329</FONT>         * @throws IllegalAccessException  &lt;code&gt;method&lt;/code&gt; is inaccessible<a name="line.329"></a>
<FONT color="green">330</FONT>         * @throws ClassCastException  &lt;code&gt;method.invoke()&lt;/code&gt; throws an <a name="line.330"></a>
<FONT color="green">331</FONT>         *    &lt;code&gt;IllegalArgumentException&lt;/code&gt;, usually due to mismatched types   <a name="line.331"></a>
<FONT color="green">332</FONT>         * @throws Exception    an exception thrown by the invoked method<a name="line.332"></a>
<FONT color="green">333</FONT>         */<a name="line.333"></a>
<FONT color="green">334</FONT>        static public Object invoke(final Method method, final Object self,<a name="line.334"></a>
<FONT color="green">335</FONT>                                    final Object... args) throws Exception {<a name="line.335"></a>
<FONT color="green">336</FONT>            if (!Modifier.isPublic(method.getDeclaringClass().getModifiers())) {<a name="line.336"></a>
<FONT color="green">337</FONT>                throw new IllegalAccessException(method.toString());<a name="line.337"></a>
<FONT color="green">338</FONT>            }<a name="line.338"></a>
<FONT color="green">339</FONT>            if (!safe(method)) {<a name="line.339"></a>
<FONT color="green">340</FONT>                throw new IllegalAccessException(method.toString());<a name="line.340"></a>
<FONT color="green">341</FONT>            }<a name="line.341"></a>
<FONT color="green">342</FONT>            try {<a name="line.342"></a>
<FONT color="green">343</FONT>                return method.invoke(self, args);<a name="line.343"></a>
<FONT color="green">344</FONT>            } catch (final IllegalArgumentException e) {<a name="line.344"></a>
<FONT color="green">345</FONT>                throw new ClassCastException();<a name="line.345"></a>
<FONT color="green">346</FONT>            } catch (final InvocationTargetException e) {<a name="line.346"></a>
<FONT color="green">347</FONT>                final Throwable cause = e.getCause();<a name="line.347"></a>
<FONT color="green">348</FONT>                if (cause instanceof Error) { <a name="line.348"></a>
<FONT color="green">349</FONT>                    throw (Error) cause;<a name="line.349"></a>
<FONT color="green">350</FONT>                }<a name="line.350"></a>
<FONT color="green">351</FONT>                throw (Exception) cause;<a name="line.351"></a>
<FONT color="green">352</FONT>            }<a name="line.352"></a>
<FONT color="green">353</FONT>        }<a name="line.353"></a>
<FONT color="green">354</FONT>    }<a name="line.354"></a>




























































</PRE>
</BODY>
</HTML>
